tachycardia
noun
tachy·car·dia
ˌta-ki-ˈkär-dē-ə 
: relatively rapid heart action whether physiological (as after exercise) or pathological compare bradycardia
Examples of tachycardia in a Sentence
Recent Examples on the Web
Several months later, she was finally diagnosed with postural orthostatic tachycardia syndrome (POTS), a disorder involving the autonomic nervous system that causes rapid heartbeat, nausea, brain fog, fainting, and fatigue.
—
Alexa Mikhail, Fortune, 20 July 2025
Guidance released in 2020 pointed to studies that found heart rhythm abnormalities, such as tachycardia and atrial fibrillation, could occur within an hour after weed containing THC was smoked.
—Sandee Lamotte, CNN Money, 28 May 2025
In 2019, at 16 years old, Drury, now 21, was diagnosed with postural orthostatic tachycardia syndrome (POTS).
—Jordan Greene, People.com, 30 Oct. 2024
They have also previously been diagnosed with bipolar disorder, endometriosis, Ehlers-Danlos syndrome, POTS (postural orthostatic tachycardia syndrome), Sjogren’s syndrome, and MCAS (mast cell activation syndrome).
—Mekishana Pierre, EW.com, 23 June 2025
See All Example Sentences for tachycardia
Examples are automatically compiled from online sources to
show current usage.
Read More
Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
Send us feedback.
Alexa Mikhail, Fortune, 20 July 2025
Guidance released in 2020 pointed to studies that found heart rhythm abnormalities, such as tachycardia and atrial fibrillation, could occur within an hour after weed containing THC was smoked.
—Sandee Lamotte, CNN Money, 28 May 2025
In 2019, at 16 years old, Drury, now 21, was diagnosed with postural orthostatic tachycardia syndrome (POTS).
—Jordan Greene, People.com, 30 Oct. 2024
They have also previously been diagnosed with bipolar disorder, endometriosis, Ehlers-Danlos syndrome, POTS (postural orthostatic tachycardia syndrome), Sjogren’s syndrome, and MCAS (mast cell activation syndrome).
—Mekishana Pierre, EW.com, 23 June 2025
See All Example Sentences for tachycardia
Cite this Entry
“Tachycardia.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/tachycardia. Accessed 7 Aug. 2025.
Copy CitationMedical Definition
tachycardia
noun
tachy·car·dia
ˌtak-i-ˈkärd-ē-ə
: relatively rapid heart action whether physiological (as after exercise) or pathological see junctional tachycardia, paroxysmal tachycardia, sinus tachycardia, ventricular tachycardia compare bradycardia
Love words? Need even more definitions?
Merriam-Webster unabridged
Share